<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区 -->
    <el-card>
      <!-- 搜索与添加区 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入搜索内容" v-model="queryInfo.query" :clearable="true" @clear="getUserList">
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true ">添加用户</el-button>
        </el-col>
      </el-row>

      <!-- 用户列表区 -->
      <el-table :data="userList" :border="true" stripe>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态" >
          <template slot-scope="scope">
            <el-switch v-model=" scope.row.mg_state " @change="userStateChanged(scope.row)"></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
          <template slot-scope="scope">
            <!-- 修改按钮 -->
            <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
            <!-- 删除按钮 -->
            <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
            <!-- 分配角色按钮 -->
            <el-tooltip  effect="dark" content="分配角色" placement="top" :enterable="false">
               <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
           </el-tooltip>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页区 -->
      <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange" :current-page="queryInfo.pagenum"
      :page-sizes="[1, 2, 5, 10]" :page-size="queryInfo.pagesize" layout="total, sizes, prev, pager, next, jumper" :total="total">
    </el-pagination>

    </el-card>
    
    <!-- 添加用户的对话框 -->
    <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%" @close = "addDialogClosed">
      <!-- 内容主体区 -->
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px" >
         <el-form-item label="用户名" prop="username">
           <el-input v-model="addForm.username"></el-input>
         </el-form-item>
         <el-form-item label="密码" prop="password">
           <el-input v-model="addForm.password"></el-input>
         </el-form-item>
         <el-form-item label="邮箱" prop="email">
           <el-input v-model="addForm.email"></el-input>
         </el-form-item>
         <el-form-item label="手机" prop="mobile">
           <el-input v-model="addForm.mobile"></el-input>
         </el-form-item>
      </el-form>
      <!-- 底部区 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 修改用户的对话框 -->
    <el-dialog title="修改用户信息" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
      <el-form :model="editForm"  :rules="editFormRules" ref="editFormRef" label-width="70px">
         <el-form-item label="用户名" >
           <el-input  v-model="editForm.username" disabled></el-input>
         </el-form-item>
         <el-form-item label="邮箱" prop="email">
           <el-input  v-model="editForm.email" ></el-input>
         </el-form-item>
         <el-form-item label="手机号" prop="mobile">
           <el-input  v-model="editForm.mobile" ></el-input>
         </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
         <el-button @click="editDialogVisible = false">取 消</el-button>
         <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 分配角色的对话框 -->
    <el-dialog title="分配角色" :visible.sync="setRoleDialogVisible" width="50%" @close="setRoleDialogClosed">
      <div>
        <p>当前的用户：{{userInfo.username}}</p>
        <p>当前的角色：{{userInfo.role_name}}</p>
        <p>分配新角色：
          <el-select v-model="selectedRoleId" placeholder="请选择">
            <el-option v-for="item in rolelist" :key="item.id" :label="item.roleName" :value="item.id">
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo()">确 定</el-button>
      </span>
    </el-dialog>

  </div>
</template>

<script>
export default {
  name: "Users",
  data() {
    //验证邮箱的规则
    var checkEmail = (rule, value, callback) =>{
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
      if(regEmail.test(value)){
        //合法邮箱
        return callback();
      }
      callback(new Error('请输入合法的邮箱'))
    }

    //验证手机号的规则
    var checkMobile = (rule, value, callback) =>{
      const regMobile = /^(0|86|17951)?(13[0-9]|15[0123456789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
      if(regMobile.test(value)){
        //合法手机号
        return callback();
      }
      callback(new Error('请输入合法的手机号'))
    }
    return {
      //获取用户列表的参数对象
      queryInfo: {
        query: "",
        //当前的页数
        pagenum: 1,
        //当前每页显示多少条数据
        pagesize: 2,
      },
      userList: [],
      total: 0,
      // 对话框的显示与隐藏
      addDialogVisible: false,
      //添加用户的表单数据
      addForm: {
        username:'',
        password:'',
        email:'',
        mobile:''
      },
      //添加表单的验证规则对象
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur'
            //trigger: 'blur' 验证时机，在失去焦点时验证 
          },
          { min:3, max:10, message: '用户名长度在3~10个字符之间', trigger: 'blur'}
        ],

        password: [
          { required: true, message: '请输入密码', trigger: 'blur'
            //trigger: 'blur' 验证时机，在失去焦点时验证 
          },
          { min:3, max:10, message: '密码长度在6~15个字符之间', trigger: 'blur'
          }
        ],

        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur'
            //trigger: 'blur' 验证时机，在失去焦点时验证 
          },
          {validator:checkEmail, trigger: 'blur'}
        ],

        mobile:[
          { required: true, message: '请输入手机号', trigger: 'blur'
            //trigger: 'blur' 验证时机，在失去焦点时验证 
          },
           {validator:checkMobile, trigger: 'blur'}
        ]
      },

      //控制修改用户对话框的显示与隐藏
      editDialogVisible:false,

      //查询到的用户信息对象
      editForm:{},

      //修改表单的验证规则对象
      editFormRules:{
        email:[
          {required: true, message: '请输入邮箱', trigger: 'blur'},
          {validator:checkEmail, trigger: 'blur'}
        ],
        mobile:[
           {required: true, message: '请输入手机号', trigger: 'blur'},
           {validator:checkMobile, trigger: 'blur'}
        ]
      },
      //控制分配角色对话框的显示与隐藏
      setRoleDialogVisible: false,
      //需要被分配角色的用户信息
      userInfo: {},
      //所有角色的数据列表
      rolelist: [],
      //已选中的角色id值
      selectedRoleId:''
    }
  },
  created() {
    this.getUserList();
  },
  methods: {
    async getUserList() {
      const { data: res } = await this.$http.get("users", {
        params: this.queryInfo,
      });
      if (res.meta.status !== 200)
        return this.$message.error("获取用户列表失败");
      //console.log(res);
      this.userList = res.data.users;
      this.total = res.data.total;
    },

    //监听pagesize改变的事件
    handleSizeChange(newSize) {
      console.log(newSize);
      this.queryInfo.pagesize = newSize;
      this.getUserList();

    },
    //监听页码值 改变的事件
    handleCurrentChange(newPage){
       this.queryInfo.pagenum = newPage;
       this.getUserList();
    },
    //监听 switch 开关状态的改变
    async userStateChanged(userInfo){
       console.log(userInfo);
       const { data: res } =  await this.$http.put(
        `users/${userInfo.id}/state/${userInfo.mg_state}`)

       if (res.meta.status !== 200) {
           userInfo.mg_state = !userInfo.mg_state
          return this.$message.error('更新用户状态失败')
        }
       this.$message.success('更新用户状态成功！')

    },
    //监听添加用户对话框的关闭事件
    addDialogClosed(){
      this.$refs.addFormRef.resetFields()
    },
    //点击按钮，添加新用户
    addUser(){
      this.$refs.addFormRef.validate(async valid => {
        if(!valid) return 
        //发起添加用户的真正网络请求
       const {data:res} = await this.$http.post('users', this.addForm)

       if(res.meta.status !== 201){
         this.$message.error('添加用户失败');
       }
       this.$message.success('添加用户成功');
       //添加失败/成功后隐藏用户的对话框
       this.addDialogVisible = false
       //重新获取用户的列表数据
       this.getUserList();
      })
    },
    //展示编辑用户的对话框
    async showEditDialog(id){
      //console.log(id)
      const {data: res} = await this.$http.get('users/'+id)

       if(res.meta.status !== 200){
         this.$message.error('查询用户信息失败');
       }
      this.editForm = res.data
      this.editDialogVisible = true 
    },

    //监听修改用户对话框的关闭事件
    editDialogClosed(){
      this.$refs.editFormRef.resetFields()
    },
    
    //修改用户信息并提交
    editUserInfo(){
       this.$refs.editFormRef.validate(async valid => {
         //console.log(valid);
         if(!valid) return
         //发起修改用户信息的请求
         const {data:res} = await this.$http.put('users/'+ this.editForm.id, {
           email: this.editForm.email,
           mobile: this.editForm.mobile
         })

         if(res.meta.status !== 200){
           return this.$message.error('更新用户信息失败');
         }

         //关闭对话框
         this.editDialogVisible = false

         //刷新数据列表
         this.getUserList();

         //提示修改成功
         this.$message.success('更新用户信息成功');
       })
    },
    //根据id删除对应的用户信息
    async removeUserById(id){
       //console.log(id);
       //弹框询问用户是否删除数据
        const confirmResult =  await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err => {return err})

        //如果用户确认删除，则返回值为字符串 confirm
        //如果用户取消删除，则返回值为字符串 cancel
        //console.log(confirmResult);
        if(confirmResult !== 'confirm'){
          return this.$message.info('已取消删除')
        }

        //console.log('确认了删除')
        const {data: res} = await this.$http.delete('users/' + id);
        if(res.meta.status !==200){
          return this.$message.error('删除用户失败！')
        }
        this.$message.success('删除用户成功');
        this.getUserList();
    },
    //展示分配角色的对话框
    async setRole(userInfo){
      this.userInfo = userInfo;

      //在展示对话框之前，获取所有的角色列表
      const {data:res} = await this.$http.get('roles')
      if(res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败！')
      }
      this.rolelist= res.data;
      this.setRoleDialogVisible = true;
    },
    //点击按钮，分配角色
    async saveRoleInfo(){
      if(!this.selectedRoleId){
        return this.$message.error('请选择要分配的角色！')
      }

      //
      const {data: res} = await this.$http.put(`users/${this.userInfo.id}/role`,
      { 
        rid: this.selectedRoleId 
      })
      console.log(res);
      if(res.meta.status !== 200) {
        return this.$message.error('更新角色失败！');
      }
      this.$message.success('更新角色成功！');
      this.getUserList();
      this.setRoleDialogVisible = false;
    },
    //监听对话框的关闭事件
    setRoleDialogClosed(){
      this.selectedRoleId = '';
      this.userInfo = {};
    }
  }
};
</script>

<style scoped>
</style>